Prepare optional ingredients, if necessary.
Preheat oven at 375°F.
Strain macaroni once cooked.
Place macaroni back into the pot on medium heat.
Add 275 mL evaporated milk, 150g cheese, butter, onion powder, garlic powder, oregano, black pepper, optional seasonings, 1½ tsp salt and 1 tsp of Italian seasoning to the macaroni.
Mix thoroughly.
Simmer for 5 minutes or until the milk thickens.
Taste test. Adjust any flavors.
Pour the thickened macaroni mixture into the prepped baking dish. Spread evenly.
Sprinkle 75g of ground crackers over the macaroni.
Top with the remaining cheese (100g).
Add ½ tsp of Italian seasoning over the cheese.
Pour the remaining milk (55mL) over everything.
Place macaroni pie on the top shelf of the oven.
Bake for 15 to 20 minutes or until the topping becomes crisp.
Remove from oven. Leave to cool before cutting.